Good coordination between the principal doctor and companies will benefit workers with mental health disorders, and for that reason a common understanding is required. Companies seeks to preserve a workers' health from the viewpoint of obligation of security, while "caseness", being the trouble in the companies, is undesirable from the viewpoint of risk management. The principal doctor needs to understand that the companies reaction sets the caseness above the illness. There are various national guidelines and forms of guidance for workers' mental health. "Guidelines for the Promotion of Workers' Mental Health at Work" was indicated in 2000 for the development of an organizational framework, and the "Manual on Workplace Reentry Support for Workers Returning from Leave Due to Mental Health Issues" was indicated in 2004. "Certification Criteria for Mental Disorders Caused by Psychological Stress" was also indicated in 2011 and, in which, harassment was recognized as an injury of workers. In many cases, companies consider employees with mental health disorders with these guidelines and guidance in mind to avoid lawsuits, and principal doctors are similarly expected to share a common understanding, promoting favorable coordination.
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